Toshiba SSD KBG30ZMV256G Recovery Options

[Data Lab]

I have this SSD that I originally assumed to be a M.2 Sata due to the (B+M) key. However after reading the various forum posts available on this model I believe this is actually a NVME SSD.

None the less I am trying to see if I can recover data. The board does not have any obvious faults. Its a fairly simple design compared to other SSD's. It appears that the controller and nand are all in the single chip. When powered on none of the components generate abnormal amounts of heat. The warmest component is the controller/nand. 

I measured voltage at the points mentioned by fzabkar in the following post on hddguru and all test okay.
https://forum.hddguru.com/viewtopic.php?f=10&t=41162&hilit=KBG30ZMV256G

This leads me to believe that the controller is the fault and if this is indeed a NVME SSD then my PC3K UDMA will be of no use. That being said I did see that the user "einstein" on hddguru mentions the following  " chip-off is a must with high pro. tools (VNR helps a lot here)" , my understanding was that VNR was only for flash devices similar to PC3K flash and that SSD recoveries were limited to a few of the old models that did not encrypt the data in some fashion. Is this something that could possibly be done with VNR or better yet PC3K flash? 

I do not have pc3k portable. I do have PC3K flash and would be open to possibly getting vnr if its capabilites extend beyond what pc3k flash can accomplish. I can also try removing / reballing the nand and placing on a donor but given that the board appears okay not sure this would get me much further. I am also open to shipping this to someone if portable is the only option. This is of course assuming that this is some type of firmware fault and not a completley dead chip.

Any info is greatly appreciated, thanks all! 

[pbzcbf...@gmail.com]

Yes, it's an NVMe SSD. The good news (?) is that it's non-SED.

https://i.ebayimg.com/images/g/~pgAAOSws4hjzh-5/s-l1600.jpg (SMART)

https://p2-ssl.vatera.hu/photos/6c/a4/toshiba-256gb-nvme-m-2-ssd-kbg30zmv256g-ba3c_2_big.jpg?v=2 (label)

https://gzhls.at/blob/ldb/a/0/7/7/3f4a6f03de431912dfb97c4a39dcdd274193.pdf (BG3 datasheet)

[juanvd...@gmail.com]

How many PCI lanes is on Toshiba and did you try to connect directly to a motherboard via a PCI adaptor might be your USB bridge does not support all the lanes for this model ?

 

Juan      

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[img]

There is Gen3 x2 mentioned in the documentation: https://toshiba.semicon-storage.com/eu/company/news/2017/08/storage-20170803-1.html

AFAIK there's plenty of B+M NVMe drives but they're all limited to x2 lanes. Anything with Phison E8 / E8T, the WD SN500 with SanDisk controller, SX6000 (original, Realtek controller), NM500 / 520 (Marvell controller), etc.

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[Data Lab]

Yes I did try and connect it directly and also tried numerous readers with different controllers including the JMicron and ASMedia  ones. Thanks for the info guys, good to know that its not SED. Is there an adapter that will read this bga chip to get a dump? 

[img]

Have you tried to connect it via USB Stabilizer? What error message it gave, eg. "device not initialized", etc.?

Would you share a photo of the pinout / layout of the chip?

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[Data Lab]

I did try and connect it to my usb stabilizer. Stabilizer does not recognize it at all and displays the id for the adapter. I have attached a photo of the layout and the pinout appears to be available in the following document that pbzcbf posted above
Link to pinout: https://gzhls.at/blob/ldb/a/0/7/7/3f4a6f03de431912dfb97c4a39dcdd274193.pdf

[teofi...@gmail.com]

I'm also interested in a solution for this. I have one in for recovery. Cannot initialize over usb stabilizer. I don't have portable to try, but I guess without a loader would not make any difference. Customer said he bought the laptop only a couple of month ago. However date on ssd is 12NOV2018. Thermografic scan looks like this in my case. .drug suggested that the cpu controller is shorted. 

[pbzcbf...@gmail.com]

Measure the resistance between ground and each of the supply test points identified earlier. That will tell you if anything is shorted.

[teofi...@gmail.com]

There is no short present on the pcb. Can it be an internal short of the SoC that is not present outside of the chip ?

[img]

I think there's no short at all because there is just 75 Celsius max. but the linked brochure mentions 80 Celsius max. allowed opreational temperature on the chip surface.

If this SSD is hot as like this, it can occur torn pads under the chip due to the massive temperature lifting. If I were you I would reball that chip on the PCB. I mean it worth a try.

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